Nicholas U. Mayall Telescope

A telescope at Kitt Peak National Observatory in Arizona has captured a striking new view of a dark nebula called LDN 1622, located in the nearby Orion...

Over the course of billions of years, galaxies grow and evolve by forging new stars and merging with other galaxies through aptly named "galactic immigration" events. Astronomers try to uncover the histories of these immigration events by studying the motions of individual stars throughout a galaxy and its extended halo of stars and dark matter. Such cosmic archaeology, however, has only been possible in our own…

A new data release from the Dark Energy Spectroscopic Instrument hints that the universe's dark energy is not constant and may be weakening over time. The post New data hints dark energy in the universe is evolving first appeared on EarthSky.

The peak of the Geminid meteor shower is on Friday, but NASA is advising to catch them sooner.

Scientists have analyzed the first batch of data from the Dark Energy Spectroscopic Instrument's quest to map the universe and unravel the mysteries of dark energy.

The universe is teeming with galaxies, each brimming with billions of stars. Though all galaxies shine brightly, many are cloaked in dust, while others are so distant that to observers on Earth they appear as little more than faint smudges. By creating comprehensive maps of even the dimmest and most-distant galaxies, astronomers are better able to study the structure of the universe and unravel the mysterious…

The Dark Energy Spectroscopic Instrument (DESI), currently pointed at the skies from its home in the Nicholas U. Mayall Telescope at the Kitt Peak National Observatory in Arizona, is tasked with charting the expansion of space, investigating dark en

Analysis of millions of galaxies upholds Albert Einstein's ideas about gravity and also offers tantalising new hints of how dark energy may have evolved

To study dark energy's effects over the past 11 billion years, the Dark Energy Spectroscopic Instrument (DESI) has created the largest 3D map of our cosmos ever constructed, with the most precise measurements to date.

This enormous structure could help explain processes close to the dawn of time—or it could be a random cosmic fluke

The Andromeda galaxy (Messier 31), which is located 2.5 million light-years away, is the Milky Way's nearest large galactic neighbor.

A 'CT scan' of the Universe across more than 5 billion light-years. (D. Schlegel/Berkeley Lab/DESI data

Physicists have proposed a new model of space-time that may provide the 'first observational evidence supporting string theory,' a new preprint suggests.

Astronomers have found more evidence for black holes as the source of mysterious dark energy, which makes up 70% of our universe. The post More evidence for black holes as the source of dark energy first appeared on EarthSky.

DESI is now creating the new 3D.

This is one big map.

New results from the DESI (Dark Energy Spectroscopic Instrument) Collaboration have revealed signs of a time-varying dark energy.

Our current best theories of the universe suggest that dark energy is making it expand faster and faster, but new observations from the Dark Energy Spectroscopic Instrument suggest this mysterious force is actually growing weaker

Scientists have discovered thousands of new black holes, more than tripling the number we knew before. How'd they do it? The post Wow! Thousands of new black holes just found first appeared on EarthSky.

The Geminids are among the few major meteor showers to come from asteroids, and this year...